M/8E&M/4E&M; Functions And Appearance - Raisecom RC3000-15 Hardware Description

Raisecom
RC3000-15 (P100R001) Hardware Description
8.3 16E&M/8E&M/4E&M

8.3.1 Functions and appearance

Panel
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Copyright © Raisecom Technology Co., Ltd.
Function
The 16E&M/8E&M/4E&M card is a 16-
way/8-way/4-way E&M audio access
card. It provides the following functions:
 Support configuring signaling mode:
– Support original signaling and
reverse signaling. By default, it is
original signaling.
– Support signaling occupation a-bit
and b-bit. By default, it is a-bit.
 Support configuring 2-wire/4-wire
mode through software.
 Support configuring voice gain
through software:
–
The Rx D/A gain ranges from -3 to
27 dB.
–
The Tx D/A gain ranges from -13 to
+7 dB.

Support three default configurations, as
listed in Table 8-14. When the card
leaves factory, the configuration is the
third one. Configuring jumper
implements three default
configurations, but has lower priority
than configuring through network
management. For details, see section
8.3.6 Internal jumper.
 Support inwards loopback for analog
audio and outwards loopback for
analog audio (in 4-wire mode only),
and support inwards loopback for
E&M signaling.
 Support querying signaling status.
 The E&M signaling type is fixed to V.
8 Voice cards
80